US Open 2021 - Day 1 Women’s Singles 1R

US Open 2021 - Day One Women’s Singles first round 

US Open - a Grand Slam tournament, on Hard, in New York City, New York, USA, 30 August - 12 September 2021.

Defending champion:

Naomi Osaka (4) who defeated Victoria Azarenka 1-6 6-3 6-3

13th seed Jennifer Brady withdrew after the main draw was published due to a knee injury, and was replaced by lucky loser Stefanie Voegele.

27th seed Jelena Ostapenko withdrew after the main draw was published due to undisclosed medical reasons, and was replaced by lucky loser Greet Minnen.

Johanna Konta withdrew after the main draw was published due to a thigh injury, and was replaced by lucky loser Kamilla Rakhimova.

First round results:

- Elina Svitolina (5) defeated qualifier Rebecca Marino 6-2 6-3

- Qualifier Rebeka Masarova defeated Ana Bogdan 6-7(9) 7-6(2) 7-6(9)

- Marketa Vondrousova defeated Elena-Gabriela Ruse 7-5 6-0

- Daria Kasatkina (25) defeated Tsvetana Pironkova 6-2 6-1

- Elena Rybakina (19) defeated Aliaksandra Sasnovich 6-2 6-3

- Caroline Garcia defeated qualifier Harriet Dart 6-7(6) 6-4 6-2

- Lucky loser Kristina Kucova defeated Ann Li 7-5 6-1

- Simona Halep (12) defeated Camila Giorgi 6-4 7-6(3)

- Angelique Kerber (16) defeated Dayana Yastremska 3-6 6-4 7-6(3)

- Anhelina Kalinina defeated lucky loser Mayar Sherif 4-6 6-1 6-1

- Sloane Stephens defeated Madison Keys 6-3 1-6 7-6(7)

- CoCo Gauff (21) defeated Magda Linette 5-7 6-3 6-4

- Kaia Kanepi defeated Yulia Putintseva (31) 2-6 7-6(4) 6-2

- Leylah Fernandez defeated qualifier Ana Konjuh 7-6(3) 6-2

- Qualifier Olga Danilovic defeated wildcard Alycia Parks 6-3 7-5

- Naomi Osaka (3) defeated Marie Bouzkova 6-4 6-1

- Barbora Krejcikova (8) defeated qualifier Astra Sharma 6-0 6-4

- Christina McHale defeated wildcard Emma Navarro 6-1 7-6(5)

- Lucky loser Kamilla Rakhimova defeated Kristina Mladenovic 2-6 6-2 6-3

- Ekaterina Alexandrova (32) defeated Sara Errani 6-3 6-2

- Victoria Azarenka (18) defeated Tereza Martincova 6-4 6-0

- Jasmine Paolini defeated Yaroslava Shvedova 6-3 6-4

- Andrea Petkovic defeated Irina-Camelia Begu 6-2 7-6(3)

- Garbiñe Muguruza (9) defeated Donna Vekic 7-6(4) 7-6(5)

- Elise Mertens (15) defeated Rebecca Peterson 3-6 7-6(5) 7-6(5)

- Qualifier Valentini Grammatikopoulou defeated Anna Blinkova 6-3 6-2

- Maria Camila Osorio Serrano defeated Ivana Jorovic 6-2 6-2

- Ons Jabeur (20) defeated Alizé Cornet 7-5 7-5

- Danielle Collins (26) defeated Carla Suarez Navarro 6-2 6-4

- Kaja Juvan defeated Heather Watson 6-1 6-4

- Tamara Zidansek defeated Bernarda Pera 6-4 7-6(4)

- Aryna Sabalenka (2) defeated Nina Stojanovic 6-4 6-7(4) 6-0